Updated mypy and pylint (#54)

This change updates mypy to 0.782 and pylint to 2.6.0 to keep track with
the time.

mapry/py/generate/__init__.py

@@ -152,8 +152,7 @@ def order_by_optional(properties: Mapping[str, mapry.Property]
     :param properties: properties of a composite
     :return: list of properties sorted stable by ``optional`` attribute
     """
-    return sorted([prop for prop in properties.values()],
-                  key=lambda prop: prop.optional)
+    return sorted(properties.values(), key=lambda prop: prop.optional)
 
 
 class AutoID:

setup.py

@@ -46,8 +46,8 @@
         'dev': [
             'coverage>=4.5.1,<5',
             'pydocstyle>=3.0.0,<4',
-            'mypy==0.670',
-            'pylint==2.3.0',
+            'mypy==0.782',
+            'pylint==2.6.0',
             'yapf==0.27.0',
             'temppathlib>=1.0.3,<2',
             'isort>=4.3.4,<5',